Don't worry about it
I honestly look at the better ones and try to figure out how they made their costume. Heck, try and ask them how they did things to see if they aren't an elitist and will actually help you haha XD
I sometimes get discouraged to, especially if the one cosplayer I look up to and admire cosplays as someone I may want to do one year. I just think that I can be just as good as that, but in my own way. Everyone has their own interpretations to bringing a character to life, so no two cosplays are the same
Never feel down about it though, just use them as inspiration to challenge yourself!